Module ast 

Internal SQL AST. Lifts the relevant subset of the libpg_query protobuf tree into a Rust enum the compiler walks. Statements not yet supported parse cleanly but compile to crate::SQLError::Unsupported.

Structs

AlterForeignTableStmt

AlterRoleStmt

AlterRoutineOwnerStmt

AlterRoutineStmt

ALTER FUNCTION | PROCEDURE | ROUTINE name[(input_types)] ... with an optional exact declared input identity.

AlterSequence

AlterTableStmt

AlterViewStmt

AutoIncrement

Durable sequence provenance for a SERIAL or identity column.

AutoIncrementOwner

Durable owner of an implicit sequence. Inherited SERIAL defaults and declarative partitions copy this owner unchanged, so truncating a child cannot reset a sequence owned by its parent.

CTE

ColumnDef

CreateForeignServer

CreateForeignTable

CreateFunction

CREATE [OR REPLACE] FUNCTION | PROCEDURE.

CreateIndex

CreateRoleStmt

CreateRule

CreateSequence

CreateTable

CreateTrigger

CteCycleClause

PostgreSQL recursive-CTE cycle detection metadata.

CteSearchClause

PostgreSQL recursive-CTE traversal-order metadata.

DeclareCursorStmt

DeferredCreateForeignTable

A syntactically valid CREATE FOREIGN TABLE IF NOT EXISTS whose definition must be analyzed only when its target name is free.

DeferredCreateTable

A syntactically valid CREATE TABLE IF NOT EXISTS whose definition must be analyzed only after execution has established that the target relation does not already exist.

DeleteStmt

DetachedPartitionConstraint

DropFunctionItem

One DROP FUNCTION / DROP PROCEDURE target.

DropFunctionStmt

DROP FUNCTION [IF EXISTS] name[(argtypes)] [, ...] and the DROP PROCEDURE equivalent.

DropRoleStmt

DropRule

DropStmt

DropTrigger

FetchCursorStmt

ForeignKey

Table-level foreign key. Compilation preserves an omitted referenced column list as empty; validation fills it from the primary key before publication.

ForeignKeyRef

REFERENCES table[(column)] reference target.

FunctionBinding

FunctionParam

One declared parameter of a user-defined function or procedure.

GeneratedColumn

GrantDatabaseStmt

GRANT or REVOKE of CONNECT, CREATE, and TEMPORARY on databases.

GrantRoleStmt

GRANT role TO member or REVOKE role FROM member.

GrantRoutineItem

GrantRoutineStmt

GrantSchemaStmt

GRANT or REVOKE of USAGE and CREATE on schemas.

GrantSequenceStmt

GRANT or REVOKE of USAGE, SELECT, and UPDATE on sequences.

GrantTableStmt

GRANT or REVOKE of privileges on ordinary tables. An empty privilege list records ALL PRIVILEGES so explicit sequence targets can expand against their own privilege set.

IndexColumnOrder

InsertStmt

JoinUsing

LockingClause

One PostgreSQL row-locking clause, including optional OF targets and the NOWAIT / SKIP LOCKED wait policy.

MergeStmt

OnConflict

OperatorJoinRelations

The two independently bound catalog relations consumed by an operator-join table function.

OrderBy

PartitionIdentityOverride

PartitionSpec

Projection

RenameRoutineStmt

ALTER FUNCTION | PROCEDURE | ROUTINE name[(input_types)] RENAME TO new_name.

ReturningAliases

RoleMembershipOptions

PostgreSQL 18 options stored on one role-membership grant.

RoutineAclEntry

One explicit EXECUTE ACL entry. None on CreateFunction::execute_acl retains PostgreSQL’s default public execution privilege.

RoutineColumnTypeReference

Structured relation-column identity carried by a routine %TYPE declaration until catalog binding resolves it to a concrete SQL type.

RoutineInvocationBinding

Concrete parameter and result types selected for one routine invocation.

RoutineSecurityAttributes

Execution identity and planner leakproofness attached to a routine definition.

SelectStmt

SetConstraintName

SetOp

TableCheck

CHECK (expr) constraint with an optional name (CONSTRAINT <name> CHECK (...)).

TableConstraintSet

Durable table-level constraints that do not fit in ColumnDef.

TableFunction

One function inside a FromClause::FunctionGroup.

TableHierarchy

Metadata shared by ordinary inheritance and declarative partitioning.

TableKeyConstraint

A table key whose columns are compared as one tuple.

TablePrivilegeSpec

One table privilege and its optional column list. Unsupported names and column forms survive compilation so execution can preserve PostgreSQL object- and role-resolution precedence.

TransactionCharacteristics

TriggerTransitionRelation

TruncateTarget

UpdateStmt

VacuumOption

One parser-normalized VACUUM option. Keeping the parsed value in the SQL AST lets execution enforce PostgreSQL’s transaction-block error before validating command options.

VacuumStmt

VacuumTarget

One relation (and optional ANALYZE column list) named by VACUUM.

WindowFrame

WindowReference

WindowSpec

Enums

AlterForeignTableAction

AlterRoutineKind

Routine namespace selected by ALTER FUNCTION, ALTER PROCEDURE, or ALTER ROUTINE.

AlterTableAction

AlterViewAction

AlterViewKind

AutoIncrementKind

PostgreSQL syntax that supplies an omitted column value from an implicit sequence. SERIAL is a sequence-backed default, while identity columns retain a separate generation attribute and do not have a column default.

BinaryOp

ColumnType

CteMaterialization

The planning fence requested for one common-table expression.

CursorDirection

DatabasePrivilege

One requested database privilege. Unsupported names survive compilation so execution can preserve PostgreSQL target- and role-resolution precedence.

DatabaseRevokeBehavior

Dependency behavior for database privilege revocation.

DiscardTarget

DISCARD target. Mirrors PostgreSQL’s DiscardMode.

DropKind

EventEnableMode

Expr

Scalar expression nodes the compiler handles.

ForeignKeyAction

ForeignKeyMatch

FrameBound

FrameMode

FromClause

FunctionBody

Body of a user-defined routine.

FunctionDispatch

Structural identity for parser-owned expressions and overload-specific built-in implementations. These variants occupy no SQL function-name namespace.

FunctionParallel

PARALLEL UNSAFE, PARALLEL RESTRICTED, or PARALLEL SAFE routine metadata.

FunctionParamMode

Parameter mode of a CREATE FUNCTION / CREATE PROCEDURE argument. Mirrors PostgreSQL’s FunctionParameterMode.

FunctionResolutionError

Static function-call failure discovered while binding declared argument types.

FunctionReturns

Declared result shape of a user-defined function.

FunctionVolatility

IMMUTABLE / STABLE / VOLATILE marker.

GeneratedColumnKind

GrantSequenceTarget

Relation targets carried by GRANT or REVOKE for sequences.

GrantTableTarget

Relation targets carried by GRANT or REVOKE with the TABLE object class.

IndexKey

JoinKind

LockStrength

PostgreSQL row-lock strength, strongest last.

LockWait

Wait policy for a row-locking clause.

MergeWhen

NullsOrder

OnCommitAction

ON COMMIT behavior retained with a temporary table definition.

OnConflictAction

PartitionBound

PartitionRangeDatum

PartitionStrategy

RangeFunctionOperation

Operation selected for one typed range or multirange call.

RangeSubtype

RelationPersistence

PostgreSQL’s pg_class.relpersistence contract.

RoleAttribute

RoleMembershipAction

RoutineConfigAction

RoutineRevokeBehavior

RoutineVariadicMode

Call syntax selected for a routine’s variadic parameter.

RuleEvent

SchemaPrivilege

One requested schema privilege. Unsupported names survive compilation so execution can preserve PostgreSQL target- and role-resolution precedence.

SchemaRevokeBehavior

Dependency behavior for schema privilege revocation.

SequenceBound

ALTER SEQUENCE bound action, distinguishing omission from NO MINVALUE or NO MAXVALUE.

SequenceDataType

SequenceLifecycle

Name or namespace lifecycle action carried by ALTER SEQUENCE.

SequenceOwnership

OWNED BY action carried by CREATE SEQUENCE and ALTER SEQUENCE.

SequencePrivilege

One requested sequence privilege. Unsupported names survive compilation so execution can preserve PostgreSQL target- and role-resolution precedence.

SequenceRestart

Physical restart action carried by ALTER SEQUENCE.

SequenceRevokeBehavior

Dependency behavior for sequence privilege revocation.

SetOpKind

Statement

TableKeyConstraintKind

TablePrivilege

One requested ordinary-table privilege.

TableRevokeBehavior

Dependency behavior for ordinary-table privilege revocation.

TransactionIsolationLevel

TransactionStmt

TriggerDeferrability

TriggerEvent

TriggerTiming

VacuumOptionValue

WindowReferenceKind

Functions

is_builtin_aggregate_function

Return whether name is a built-in aggregate understood by the planner.

Type Aliases

GeneratedFunctionDependency

ValueExpr

Expr restricted to value-producing forms used by INSERT rows.